The National Organization for Marriage, which was active in getting Proposition 8 approved by voters in California, sent out an appeal for donations to run advertisements on behalf of political candidates who oppose same-sex marriage.

It said the first ad would support Republican Stephen Burgmeier, who supports putting the issue of same-sex marriage to a vote in the Hawkeye State. He is up for election in less than two weeks.

In April, Iowa became the third state in the nation to allow same-sex marriage after the state Supreme Court ruled that a law defining marriage as only between men and women was unconstitutional.

Brian Brown -- who spearheaded the National Organization for Marriage's efforts in California, and is now the group's executive director -- also wrote supporters that donations could be used nationwide, to “allow us to rapidly intervene … in key races across the country where a handful of House or Senate seats could make the difference between whether a same-sex marriage bill or state marriage amendment passes or fails.”